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The curing reaction and physical properties of DGEBA/DETA epoxy resin blended with propyl ester phosphazene

✍ Scribed by Bar-Long Denq; Yu-Shen Hu; Leo-Wang Chen; Wen-Yen Chiu; Tseng-Rong Wu


Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
384 KB
Volume
74
Category
Article
ISSN
0021-8995

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✦ Synopsis


The influences of different amounts of propyl ester phosphazene (FR) on the curing kinetics and physical properties of diglycidyl ether of bisphenol A (DGEBA) epoxy prepolymer cured with diethylenetriamine (DETA) were investigated with DSC, SEM, DMA, and tensile testing. The results revealed that FR could be a catalyst or a diluent depending on the FR content. In addition, the blending systems were partially miscible. The tensile strength and modulus of blends decreased with increasing amounts of FR, but the elongation increased with increasing FR.


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A diglycidyl ether of bisphenol-A ( DGEBA ) epoxy resin has been stoichiometrically cured with cycloaliphatic amine 4,4-diamino-3,3-dimethylcyclohexylmethane (3DCM) and modified with an amine terminated oligomer polyoxypropylenetriamine (POPTA) at a concentration of 15 wt %. Mixtures, postcured at t